This hour-long show is very repetitive. The commentary on the size and scariness of prehistoric creatures is sprinkled throughout each episode, never really offering much new material after each commercial break. But that's not what bothers me. I am irritated by all of the show's inaccuracies. The producers don't really seem to care if the viewer knows anything about the subject, or if they will take every word for true. For instance, they show Spinosaurus eating a dinosaur the size of its head in one bite. The problem is that the dinosaur Spinosaurus ate was half its size in real life. Also, they show Spinosaurus throwing its weight around, as if they never thought it might get badly wounded. Would a crocodile throw its weight around? No, of course not. It would hide in the water, wait for its prey to come near and then catch it. Spinosaurus doubtless did the same. They even show scaly raptors! They've been known to have been feathered since the late nineties! Teachers, do not show your students this when you don't have a lesson at the ready. There are much more informative choices out there (Planet Dinosaur, NOVA, National Geographic specials and even Dinosaur Train are all excellent picks). That said, the show's graphics are actually quite good (but still far from cutting-edge). I occasionally watch the show when I want to see good recreations of prehistoric life. Sadly, that is the show's lone strong point. I am sad that this is being called "science". I am very disappointed in the program as it is.